General Information:
Chemical Formula:
(Y,Dy,Er)4(Ti,Sn)O(SiO4)2(F,OH)6
IMA Status:
Discredited IMA 1987
Physical Properties:
Cleavage:
None
Color:
yellow.
Density:
3.96
Diaphaniety:
Transparent
Hardness:
3.5-4 - Copper Penny-Flourite
Luster:
Vitreous - Greasy
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